Buys ads in real time for companies whose products you're searching for, then serves them up on the next sites you visit. Magnetic is the fifth startup CEO Green has worked with. One of the five, PVI, was responsible for the 1998 debut of football's first Yellow Down Line. Magnetic's raised more than $15 million from investors like Edison, CRV and others. Magnetic plans to target Brazil and Singapore for the company's next international hubs and continue further European expansion.